Re: [PlayerStage-Gazebo] distances to objects

On Mon, 4 Oct 2004, Carlos Villegas wrote:
> I seek to get a image depth map (distances to objects) given two cameras
> (using triangulation). Is that something that can be done in Gazebo or I
> need to look at different sensors to get the distances (i.e. a Laser)?
Gazebo simulates real sensors; in 0.4.0 this includes sonar and laser
range finders (such as the SICKLMS200). I'm currently toying with stereo
vision, so the next release will probably contain the kind of sensor you
are looking for. Interestingly, it's not hard to get a simulated depth
map; the hard part is degrading it to approximate real stereo depth maps.
A.
Andrew Howard email: ahoward@...
Department of Computer Science http: www-robotics.usc.edu/~ahoward
University of Southern California phone: 1 (213) 740 6416
Los Angeles, CA, U.S.A. 90089-0781 fax: 1 (213) 821 5696
<< Insert pithy saying here >>>

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On Mon, 4 Oct 2004, Carlos Villegas wrote:
> I seek to get a image depth map (distances to objects) given two cameras
> (using triangulation). Is that something that can be done in Gazebo or I
> need to look at different sensors to get the distances (i.e. a Laser)?
Gazebo simulates real sensors; in 0.4.0 this includes sonar and laser
range finders (such as the SICKLMS200). I'm currently toying with stereo
vision, so the next release will probably contain the kind of sensor you
are looking for. Interestingly, it's not hard to get a simulated depth
map; the hard part is degrading it to approximate real stereo depth maps.
A.
Andrew Howard email: ahoward@...
Department of Computer Science http: www-robotics.usc.edu/~ahoward
University of Southern California phone: 1 (213) 740 6416
Los Angeles, CA, U.S.A. 90089-0781 fax: 1 (213) 821 5696
<< Insert pithy saying here >>>

Hi :)
> > Yes, you can get the distance to a object using third party vision
libraries.
> Please tell me where to find them. Have you used them with gazebo?
>
I used a library developed by the artificial vision laboratory of the
university where I study, I'll send it to you tomorrow if you want (they are
GPL). But..: They lack of documentation and I've only used them with
greyscale images.
If you find any better library tell me how to get it :)
> > There are a lot of documentation related to it.
> Where can I find the documentation.
Look at amazon and emule, there should be a lot of artificial vision
material.
I'll send it to you tomorrow :)